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Forbidden-line spectroscopy of the ground-state configuration of Cd-like W.

Authors :
Fei, Z.
Li, W.
Grumer, J.
Shi, Z.
Zhao, R.
Brage, T.
Huldt, S.
Yao, K.
Hutton, R.
Zou, Y.
Source :
Physical Review A: Atomic, Molecular & Optical Physics. Nov2014, Vol. 90 Issue 5-A, p1-6. 6p.
Publication Year :
2014

Abstract

By only using electric-dipole forbidden emission lines, in what we label forbidden-line spectroscopy, we identified several energy levels in cadmium-like tungsten, W26+. The spectrum was recorded at the Shanghai permanentmagnet electron beam ion trap in the visible region. The identifications were supported by large-scale multiconfiguration Dirac-Hartree-Fock calculations which involved careful investigations of core-valence and core-core correlation effects, and by relativistic many-body perturbation theory calculations. With this novel method we identified in all seven lines and measured their wavelengths. From this we can determine the relative position of seven energy levels. Due to the close degeneracy of two levels, we give alternative energies for three of the levels. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
10502947
Volume :
90
Issue :
5-A
Database :
Academic Search Index
Journal :
Physical Review A: Atomic, Molecular & Optical Physics
Publication Type :
Periodical
Accession number :
100110859
Full Text :
https://doi.org/10.1103/PhysRevA.90.052517